billions of years

billions of years 基本解释

数十亿年

billions of years 用法和例句

1、Stars have shined down on earth's life for billions of years.

亿万年来，星光照耀着大地

2、Bacteria have been on the Earth for billions of years.

细菌已经生存在地球上数十亿年了。

3、The abrasion of rock has been working for billions of years.

岩石的风化已经持续了上亿年之久了。

4、The sun has been emitting energy at this rate for billions of years.

太阳以这样的强度辐射已有10亿年之久。

5、As a slowly contracting dwarf the star may remain luminous for billions of years.

收缩较慢得白矮星仍会发光几十亿年。

6、out of thermal equilibrium for billions of years so life can evolve.

处于热平衡状态，达几十亿年之久，使生命可以发展延续

7、This is how, if you took billions of years to go around, it might look to you, right?

这就是你如果花几十亿年将看到的样子 对吧？

8、We are not the determined product of billions of years of evolutionary plotting and planning.

我们不是亿万年进化史中 所精心设计的最终产物。

9、Light takes billions of years to reach our telescopes from distant astronomical sources.

遥远天体发出的光, 经过数十亿年才能到达我们的望远镜。

10、The idea was to compare the expansion rate today with the rate billions of years ago by gauging the speeds of exploding stars called supernovas.

研究人员们通过测量一种叫做超新星的爆炸恒星，将宇宙现在的膨胀速度与数十亿年以前的膨胀速度相比较。

重点词汇

billions n. 十亿（billion的复数形式）

years n. 年代；岁月；年；年龄